So in order to avoid plated-trough holes, i had to come up with another way to interconnect the resistor traces on top with the circuitry and connectors on the bottom. The best compromise i found was to hang a small "ledge" of PCB off to the side at the rear near the connectors through which an 8-pin 0.1" header strip can be inserted and soldered on both sides (and then trimmed) thus avoiding having any parts encroach on the "active" build area.
Many Power / voltage options now supported. By default, the board will come set up for 12V @ 130W unless you specifically ask for a different option, or prefer to configure a "virgin" board yourself. Its admittedly a little confusing so i printed a table to help make sense of off the options on the back of the board. The * settings are not available/recommended on the Quantum version.
Also as this is my first "official" foray into doing open-source hardware, i looked at the licensing options and issues very quickly and realized i would have to spend a lot more time on that to fully understand all the options and ramifications. Since i had to pick something for this design now, i went with a non-commercial open-hardware license i found; until i have more time to investigate that further, this will do. Once i a more fluent in this area, i plan to transition into a more "permissive" version.
The 5V option is not meant to be "mainstream" but rather its an easily "hackable" mod for the more adventurous. there is a separate 1/4" faston tab (not populated normally) for 5V power. Notice the 2x4 header location on the back near the lower corner; a connection has to be made (from back to front) at this location. If anyone is interested in trying this i'll add detailed instructions and pictures of how this is best accomplished.